Pulse or digital communications – Transmitters – Amplitude modulation
Reexamination Certificate
2006-06-30
2009-11-17
Tran, Khai (Department: 2611)
Pulse or digital communications
Transmitters
Amplitude modulation
C714S755000
Reexamination Certificate
active
07620118
ABSTRACT:
A digital television (DTV) transmitter and a method of coding data in the DTV transmitter are disclosed. A data formatter generates an enhanced data packet including the enhanced data and a known data sequence. A data randomizer randomizes the enhanced data packet. A RS encoder RS-codes the randomized data packet by adding first parity data, and a data interleaver interleaves the RS-coded data packet. A trellis encoding unit trellis-encodes the interleaved data packet. Herein the trellis encoding unit includes a TCM encoder for generating a first output bit by trellis-encoding a first input bit and generating a second output bit by bypassing the first input bit, and a pre-coder for generating a third output bit by pre-coding a second input bit, wherein memories included in the TCM encoder and the pre-coder are initialized when the known data sequence is inputted to the trellis encoding unit.
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ATSC “ATSC Standard: Digital Television Standard (A/53), Revision D, Including Amendment No. 1”, Doc. A/53D, Jul. 19, 2005.
Lee Hong Degerman Kang & Waimey
LG Electronics Inc.
Tran Khai
LandOfFree
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